nativeMsg RCS Business Messaging vs RCS-Box

nativeMsg RCS Business Messaging provides a platform for creating and delivering interactive business messages, with SMS and MMS fallback when a device cannot receive RCS. An RCS agent needs an attached fallback number to reach those devices. Messages can include verified branding, images, video, carousels, action buttons, forms, and suggestion chips. The Creator builder supports drag-and-drop design, personalization, templates, A/B testing, campaign scheduling, and multi-device testing on Android and iOS. Real-time analytics cover delivery, read receipts, click-throughs, and conversions. Integration options include REST APIs, webhooks, SDKs, and data export; support materials document a HubSpot integration. The site says client prompts and data are not used for training, firm-specific storage is isolated, and third-party security specialists regularly audit and test the service. Its security section references GDPR and industry best practices and compliance standards. The free plan is limited to test mode and five registered devices. Paid plans start at $199 a month, with published plan pricing for US mobile numbers; international delivery is priced by country through the enterprise team.

RCS-Box is a multi-tenant API for Google RCS Business Messaging, with EU hosting and a German contract partner. It supports text with suggestions, rich cards, carousels, XL messages, and automatic video and image unfurling. Webhooks can deliver incoming messages and opt-in or opt-out events; forwarded webhooks carry an HMAC-SHA256 signature calculated with the tenant API key. Each tenant has a dedicated key and brand-level isolation, plus a configurable country allowlist that defaults to Germany with the +49 prefix. The API manages STOP and START blacklist status per agent. Plans can use standard or newsletter mode, with newsletter billing based on active recipients per month. XL messages are available in all plans from Skizze and count as one conversation. The Free plan costs nothing and includes 100 sessions per calendar month. Skizze costs €49 a month, Atelier €249 a month, and Manufaktur €999 a month. The API is presented for development teams and technology leaders in startups, scale-ups, and enterprise technology units.